and they drove a white van and got lost while trying to locate the medical clinic where they were headed. before they were able to locate the clinic, disturbing video shows the aftermath of the kidnapping as heavily armed men loaded them into a white truck and transported them to various locations to evade capture according to mexican officials. the mexican president says that those responsible will be found and punished. a u.s. official familiar with the investigation told cnn that they believe a mexican cartel kidnapped the group after mistaking them for haitian drug smugglers. the state department has issued its highest level four warning, do not travel to the tamaulipas state. >> there are many people who cross over that border for these medical appointments. >> attacks on u.s. citizens are unacceptable no matter where or under what circumstances they occur. >> reporter: mcgee and williams